I'm curious what everyone else does in this situation. You go to a restaurant to pick up some yummy take out items. It's the kind of place where the pleasant person helping you actually has to package your food - go get the soup, the accompanying roll and heap some salad into a container from the deli case. You pay with a credit card, where there is space for writing in a tip - because it's a restaurant and that's how every receipt must look - and for your signature. You go to said place a lot. Like, they know who you are on sight. Do you write in a tip for counter service? I don't believe there's a "tip jar" for cash like some establishments have. So I'm not really sure what's expected. Don't want to feel like a tool for not tipping, if that's standard practice.
Help! Do you have an answer to this question for modern times? Please share!